Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Trade, net of allowance for bad debt of $0.3 and $0.3, respectively	$ 0.3	$ 0.3
Property and equipment, net of accumulated depreciation of $2,967.4 and $2,533.0, respectively	2,967.4	2,533.0
Intangible assets, net of accumulated amortization of $422.2 and $298.7, respectively	$ 422.2	298.7
Liabilities:
Installment payable, net of discount of $0.5 at December 31, 2017		$ 0.5
Members’ equity:
Common units issued (in shares)	181,309,981	180,600,728
Common units outstanding (in shares)	181,309,981	180,600,728